A bit of history here:
Sailboats built by Islander / Tradewind Yachts by year on Sailboatdata.com
.. the I32 from the 60s shown here doesn't look like your pics exactly, but the hull form is similar. Somehow I doubt any production boat would have a "homebuilt" HIN prefix - unless it was completed as a hull/deck kit perhaps. This is not the Gurney designed 32MKII.
Anyhow in the link there's an extensive list of Islanders that you can check out, but none I looked at are an exact match.. Happy Hunting!
Learned something today though, I had no idea that Bob Perry's Nordic 34 was 'born' as an Islander 34!